间谐波下变压器铁心振动噪声特性的实验研究  

Experimental Research on Transformer Core Vibration and Noise under Interharmonic Excitation

作　　者：李慧奇[1] 闫长祺 杨光[1] 马超[1] LI Huiqi;YAN Changqi;YANG Guang;MA Chao(Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding Hebei 071003, China;State Grid Shanxi Electric Power Co.,Ltd. Taiyuan Power Supply Branch, Taiyuan 030012, China)

机构地区：[1]华北电力大学河北省输变电设备安全防御重点实验室,河北保定071003 [2]国网山西省电力有限公司太原供电分公司,太原030012

出　　处：《太原理工大学学报》2020年第6期874-880,共7页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金重点资助项目(51577066);中央高校基本科研业务费专项资金资助(2017MS092)。

摘　　要：搭建了可测量任意间谐波激励下变压器铁心振动噪声的实验平台,在此基础上研究了间谐波对铁心振动噪声的影响。首先通过实验测量了不同间谐波激励条件下振动位移和噪声波形,然后归纳了间谐波的频率和幅值对变压器铁心振动和噪声的影响规律,并运用频谱分析总结了间谐波作用下变压器铁心的振动位移和噪声的频率特性,为分析电力变压器等设备在间谐波下的振动噪声问题奠定了理论基础。An experimental platform was established to measure the vibration and noise of a transformer core under arbitrary interharmonic excitation.On this experimental platform,the influence of interharmonics on vibration and noise was investigated.The waveforms of vibration displacement and noise under different interharmonic excitation conditions were measured.Then,the influence of the frequency and amplitude of interharmonics on the vibration and noise of transformer core was investigated.The frequency characteristics of vibration displacement and noise of transformer core under interharmonics were summarized by frequency analysis.The results of this paper lay a theoretical foundation for further researches on the vibration and noise problems of power transformers and other equipment under interharmonics.

关 键 词：间谐波 变压器铁心 振动 噪声 

分 类 号：TM412[电气工程—电器]